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<H1>IBM Visualization Data Explorer Programmer&#39;s Reference</H1>
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<H3><A NAME="HDRDXATM" HREF="progu097.htm#PToC_202">DXApplyTransform</A></H3>
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<P><STRONG>Function</STRONG>
Creates a new Object by recursively applying a transform to a
specified Object.
<P><STRONG>Syntax</STRONG>
<PRE><STRONG>
&#35;include &lt;dx/dx.h&gt;
Object DXApplyTransform(Object o, Matrix *m)
</STRONG>
</PRE>.
<P><STRONG>Functional Details</STRONG>
The routine descends Object <TT><STRONG>o</STRONG></TT>, applying transform
<TT><STRONG>m</STRONG></TT> to the components of the Fields encountered.
Any transforms present in the Object are accumulated to form a
composite transform before being applied to
subObjects.
(The Object created can be deleted with DXDelete.
See <A HREF="progu023.htm#HDRMEMNG">4.2 , "Memory Management"</A>.)
<P>
<TT><STRONG>DXApplyTransform</STRONG></TT> returns a new Object (i.e., a
copy of <TT><STRONG>o</STRONG></TT> with transforms applied).
This routine can be applied directly to Array objects.
It also removes the "box" component from transformed Fields.
<TABLE CELLPADDING="3">
<TR VALIGN="TOP"><TD><P><B><TT><STRONG>Positional Components</STRONG></TT>,
</B></TD><TD><P>Are transformed by the composite matrix.
(Positional components are "positions" and components with the
"geometric" attribute "positional".)
</TD></TR><TR VALIGN="TOP"><TD><P><B><TT><STRONG>Vector
Components</STRONG></TT>,
</B></TD><TD><P>Are transformed by the adjoint transpose of the composite
matrix.
(Vector components are "normals," "binormals,"
"tangents," "gradient," and components with the
"geometric" attribute "vector.")
</TD></TR></TABLE>
<P><STRONG>Return Value</STRONG>
Returns <TT><STRONG>o</STRONG></TT> or returns <TT><STRONG>NULL</STRONG></TT>
and sets an error code.
<P><STRONG>See Also</STRONG>
<TT><STRONG>
<A HREF="progu120.htm#HDRDXCPLUS">DXConcatenate, DXInvert, DXTranspose,
DXAdjointTranspose, DXDeterminant, DXApply</A>,
<A HREF="progu297.htm#HDRDXRXYZ">DXRotateX, DXRotateY, DXRotateZ, DXScale,
DXTranslate, DXMat</A>,
</STRONG></TT>
<P>
<A HREF="progu075.htm#HDRTRANSEC">16.1 , "Transformation"</A>.
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